What do you have to reckon with when elderly persons using walking frames cross the road?

The selected combination is correct because it acknowledges the various behaviors that elderly persons using walking frames may exhibit when crossing the road. According to German traffic regulations, particularly concerning vulnerable road users, it is essential for drivers and other road users to be aware of the following:

1. They may stop on the road: This highlights the uncertainty of their mobility and the need for patience from other road users.
2. They may turn round and go back: This indicates that elderly pedestrians might reconsider their decision at any moment, which requires extra caution from drivers.
3. They will cross the road slowly: This reflects the time they need to safely navigate, emphasizing the importance of allowing ample time for them to cross without feeling rushed.

Recognizing all these possibilities ensures that drivers maintain a safe distance and speed, which is vital in preventing accidents and promoting road safety for vulnerable individuals. Understanding these aspects can lead to more compassionate and understanding behavior on the road.